Abstract
In the last few years, epidemiological studies have shown correlations between the low endurance capacity of the erector spinae muscle and low back pain (LBP). In this study, the function of the erector spinae muscle and localized muscle fatigue in LBP were investigated in both LBP patients and control subjects without LBP, using surface multi-channel electromyograms (EMG). Four positions (L1, L2, L4, L5) were chosen as representative locations for the different functions of the erector spinae muscle. Median frequency (fm) parameters of an EMG power density spectrum were monitored to quantify localized muscle fatigue. This research indicated a statistically significant difference (P < 0.05) in fm, parameters between the LBP patients and the control subjects. The integrated electromyogram (iEMG) signals of LBP patients were considerably higher than for the control subjects during endurance isometric contraction. Our research suggested that human fatiguing erector spinae muscle, in submaximal voluntary contractions tests, induced a different firing order of motor unit spikes between two groups.
| Original language | English |
|---|---|
| Pages (from-to) | 361-366 |
| Number of pages | 6 |
| Journal | European Journal of Applied Physiology and Occupational Physiology |
| Volume | 69 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1994 Oct 1 |
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Keywords
- Electromyogram
- Localized muscle fatigue
- Low back pain
- Median frequency
ASJC Scopus subject areas
- Physiology
- Public Health, Environmental and Occupational Health
Cite this
Spectral analysis of electromyogram in lumbar muscles : fatigue induced endurance contraction. / Tsuboi, T.; Satou, T.; Egawa, K.; Izumi, Y.; Miyazaki, Masami.
In: European Journal of Applied Physiology and Occupational Physiology, Vol. 69, No. 4, 01.10.1994, p. 361-366.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Spectral analysis of electromyogram in lumbar muscles
T2 - fatigue induced endurance contraction
AU - Tsuboi, T.
AU - Satou, T.
AU - Egawa, K.
AU - Izumi, Y.
AU - Miyazaki, Masami
PY - 1994/10/1
Y1 - 1994/10/1
N2 - In the last few years, epidemiological studies have shown correlations between the low endurance capacity of the erector spinae muscle and low back pain (LBP). In this study, the function of the erector spinae muscle and localized muscle fatigue in LBP were investigated in both LBP patients and control subjects without LBP, using surface multi-channel electromyograms (EMG). Four positions (L1, L2, L4, L5) were chosen as representative locations for the different functions of the erector spinae muscle. Median frequency (fm) parameters of an EMG power density spectrum were monitored to quantify localized muscle fatigue. This research indicated a statistically significant difference (P < 0.05) in fm, parameters between the LBP patients and the control subjects. The integrated electromyogram (iEMG) signals of LBP patients were considerably higher than for the control subjects during endurance isometric contraction. Our research suggested that human fatiguing erector spinae muscle, in submaximal voluntary contractions tests, induced a different firing order of motor unit spikes between two groups.
AB - In the last few years, epidemiological studies have shown correlations between the low endurance capacity of the erector spinae muscle and low back pain (LBP). In this study, the function of the erector spinae muscle and localized muscle fatigue in LBP were investigated in both LBP patients and control subjects without LBP, using surface multi-channel electromyograms (EMG). Four positions (L1, L2, L4, L5) were chosen as representative locations for the different functions of the erector spinae muscle. Median frequency (fm) parameters of an EMG power density spectrum were monitored to quantify localized muscle fatigue. This research indicated a statistically significant difference (P < 0.05) in fm, parameters between the LBP patients and the control subjects. The integrated electromyogram (iEMG) signals of LBP patients were considerably higher than for the control subjects during endurance isometric contraction. Our research suggested that human fatiguing erector spinae muscle, in submaximal voluntary contractions tests, induced a different firing order of motor unit spikes between two groups.
KW - Electromyogram
KW - Localized muscle fatigue
KW - Low back pain
KW - Median frequency
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UR - http://www.scopus.com/inward/citedby.url?scp=0028034424&partnerID=8YFLogxK
U2 - 10.1007/BF00392044
DO - 10.1007/BF00392044
M3 - Article
C2 - 7851374
AN - SCOPUS:0028034424
VL - 69
SP - 361
EP - 366
JO - European Journal of Applied Physiology
JF - European Journal of Applied Physiology
SN - 1439-6319
IS - 4
ER -